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56 National Union used/good 1950 small faded getter (4.1ma) Image 1

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56 National Union used/good 1950 small faded getter (4.1ma)

Name: 56 National Union used/good 1950 small faded getter (4.1ma)
Brand: tubeworldexpress.shop
SKU: copy-of-56-national-union-used-good-1940s-5-3ma
Price: 5.99 USD
Availability: InStock
Rating: 5 (1960 reviews)

$5.99 $6.00

Tags:

1943 56 all black plate National Union Sylvania triode

Categories:

Preamp tubes

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Description

56 National Union used/good 1950 small faded getter

4.1ma

Gm=1100

Tested on Amplitrex:

Vplate=250V

Vgrid=-13.5V

Iplate good range = 4.5-5.5ma

Gm=1400

(Vfilament = 2.5 volts)

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56 National Union used/good 1950 small faded getter (4.1ma)

Description

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